Expander for expanding and securing metal bung-bushings into casks



{No.Mndel.)

H. OOTTRELL.

BXPANDER FOR EXPANDING AND SECURING METAL BUNG BUSHINGS INTO GASKS.

No. 311,960; Patented Feb. 10, 1885 r I; Ca, I, 3

HERBERT OOTTRELL, OF NEWARK, NEW JERSEY.

EXPANDER FOR EXPANDING AND SECURING METAL BUNG-BUSHINGS INTO CASKS.

SFECIFIQATIQN forming part of Letters Patent No. 311,960, dated February10, 1885.

Application tiled April 17, 1884. (No model.)

To AZ/Z whom, it 77mg concern.-

Be it known that I, HERBERT OOTTRELL, of Newark, in the county of Essexand State of New Jersey, have invented a new and useful Improvement inExpanders for Expanding and Securing Metal Bung- Bushings into Gasks.and for other purposes, of which the following is a specification,reference being had to the accompanying drawings, forming part of thisspecification.

' The principal object of my invention is to provide an expander whichcan be conveniently used by brewers or others for the purpose ofapplying and securing metal bung- I 5 bushings in barrels after thelatter are finished, and for tightening such bushings in barrels whereinthey have been previously applied, but wherein they have from any causebecome loose.

The invention consists, principally, in the combination, with anexternal] y-screwthreaded expanding sectional mandrel and a core, of twodifferential]y-screw-threaded nuts, as hereinafter described, whereby aVery powerful pressure may be so brought upon the inner edges of aflanged metal bushing after the insertion of the latter into a bung-holethat the said edges'may be thereby turned outward and the bushingtherebycaused to clamp the stave tightly around the inner edge of thebung-hole.

It also consists in certain details of construction, hereinafterdescribed.

Figure 1 of the drawings is a side View, partly in section, of anexpander constructed according to my invention, showing it in the 1 actof insertion into abung-bushing in a cask.

Fig. 2 is a similar view of the expander, but showing it in the act ofexpanding the bushing. Fig. 3 is an inverted plan of the same.

Similar letters of reference indicate corresponding parts in the severalfigures.

A is the central core, and B B are the expanding sections forming theprincipal parts 5 of the expanding sectional mandrel. The

sections B B, of which there are four represented, but of which theremay be any other convenient number, combine to form alongitudinally-divided expanding shell sur- 50 rounding the central coreA, the said shell having on the upper portion of its exterior ascrew-thread, a, and on the lower portion of its exterior a flange, 1),the. upper face of which is cavetto-shaped, the other portion of itsexterior between the cavetto and the screw-thread being slightly taper.

O and D are diiferentially-threaded nuts working one within the other.The inner nut, O. fits the screw-thread a on the exterior of themandrel-sections and holds them together around the core A, the lowerportion,

a, of which is made larger than the portion above, and slightly taperedupward, and has the interiors of the. expanding sections B B fitted toit. The upper end of the core is furnished with a broad head, cl,between which and the top of the nut O a spiral spring, 6, is placedaround the core for the purpose of drawing the latter upward within thesections with a tendency to'keep them expanded by the conical or taperportion c of the core.- On the lower part of the core is a projection,f, which enters between two of the expanding sections 13 B, for purposeof enabling the mandrel to be turned by the core whenever desirable, aswill be hereinafter explained. The thread of the external nut, D, andthe corresponding male screw-thread, 9, provided for it on the exteriorof the not C, have the same direction as the thread a on the mandrel andthe corresponding internal thread of the nut O-that is to say, both areright-handed or both left-handed-but the thread 9 and nut D are ofcoarser pitch, the pitch of the thread a and the interior of the nut 0being, say, one-tenth of an inch, and the pitch of the said thread 9 andthe interior of the nut D being, say, Oneeighth of an inch. The externalnut, D, forms the base of the expander, and is furnished on its bottomwith teeth h h, to enterthe wood of the stave of a cask and keep thesaid nut D from turning thereon. The nut O is furnished with1ever-handles O, by which to turn it within the nut D and upon thescrew-thread a at the same time, the threads at and g then acting as adiiferential screw.

The expander is made to operate in the following manner: To prepare itfor operation the nut D is run back on the screw-thread g,

and the screw-thread a is run back into the nut D, as shown in Fig. 1,and to prepare the cask G and bushing E for its operation the bushing isinserted into the bung-hole t t, to whichit fits snugly and beyond whichit projects slightly, as shown at n n in Fig. 1, with its flangejbearing on the exterior of the cask. The core (1 is then pressed down bythe operator Within the expanding sections B B of the mandrel, which arethen allowed to come together sufficiently to allow the flange b to passinto the bushing, as shown in Fig. 1. The implenient'being then held byits handle 0, the mandrel is pushed down so that its flange b passesthrough the bushing, and the base or nut D brought down upon and overthe flange of the bushing, so that its teeth h indent themselves intothe wood of the cask sufficiently to prevent D from turning. The flangeI) being through the bushing and the core liberated, the spring 6 forcesthe core upward and expands the mandrel-sections B so that their flange'2) projects laterally beyond the inner edge, a, of the bushing, andthat the said sections press against the bushing with sufficient forceto prevent the mandrel from turning. All is now ready for the operation,which is effected by turning the nut O by its handles 0 ma direction tomake it move up within the nut D and upon the thread a, neither of whichrotates. In this way the expanding mandrel is drawn up very slowly bythe differential action of the screws, but made to exert a very powerfuloutward pressure upon the edgesn n of the bushing, which are expandedoutward by the taper lower portion of the sections 13, and also bothturned upward and outward, as shown at a n, Fig. 2, by the cavettoshapedupper surface of the flange b, and so made to clamp the edges of thebung-hole very tightly.

If, on the insertion of the implement in the bushing, as hereinbeforedescribed, the flange Zr will not pass through the bottom of the bushingwhen the base or nut D comes down to the cask, the mandrel may bescrewed down within the nut G by turning the core by -the mandrel toturn with the core.

may be shortened.

means of its knob d, the projections f cafi sing on the other hand,before placing the implement in the bushing the mandrel should have beenset so low down in the nut G that the flange 12 passes farther than isnecessary through the bushing, the said flange may be brought up to thebushing in a position of readiness to commence the expanding operationby turning the mandrel by means of the knob of the core. In this way thetedious operation of bringing up the flange to the bushing by the slowdifferential action of the two nuts is avoided and the process ofexpanding the bushing It may be here stated that the spring e is notabsolutely indispensable to the apparatus, as the core might be held upby the hand during the insertion of the implement into the bushing; butthe spring affords much greater convenience for maniputhreaded andflanged sections B B, of the core A, having a taper, c, the spring a,and thedifferentially-threaded nuts 0 and D, substantially as hereindescribed.

3. The combination, with the mandrel-sections B B anddifferentially-threaded nuts 0 and D, of the core A, having aprojection, f, to engage between the mandrel-sections, substantiallyv asand for the purpose described.

HERBERT COTTRELL.

\Vitnesses: I

FREDK. HAYNES, lVIATTHEW PoLLooK.

